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ANS Student Conference 2025
April 3–5, 2025
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Hungyuan B. Liu
Nuclear Technology | Volume 115 | Number 3 | September 1996 | Pages 311-319
Technical Paper | Radiation Biology and Medicine | doi.org/10.13182/NT96-A15841
Articles are hosted by Taylor and Francis Online.
The broad beam facility (BBF) at the Brookhaven Medical Research Reactor (BMRR) can provide a thermal neutron beam with flux intensity and quality comparable to the beam currently used for research on neutron capture therapy using cell-culture and small-animal irradiations. Monte Carlo computations were made, first, to compare with the dosimetric measurements at the existing BBF and, second, to calculate the neutron and gamma fluxes and doses expected at the proposed BBF. Multiple cell cultures or small animals could be irradiated simultaneously at the so-modified BBF under conditions similar to or better than those individual animals irradiated at the existing thermal neutron irradiation facility (TNIF) of the BMRR. The flux intensity of the collimated thermal neutron beam at the proposed BBF would be 1.7 × 1010 n/cm2·s at 3-MW reactor power, the same as at the TNIF. However, the proposed collimated beam would have much lower gamma (0.89 × 10−11 cGy·cm2/nth) and fast neutron (0.58 × 10−11 cGy·cm2/nth) contaminations, 64 and 18% of those at the TNIF, respectively. The feasibility of remodeling the facility is discussed.